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(No Moden.) 2 sheetssheet 1.

J. E. YOUNG.

CALENDAR CLOCK.

Patented June 19,1883.

(No Model.) 2 Sheets-Sheet-2.

' J. E. YOUNG. GALBNDAR CLOCK.

No. 279,850. PatentedA June 19,1883.

M F4 W j N. PETERS. mauxmgnpw. wmingm, n.1;

UNITED STATES PATENT OFFICE.

JAMES E. YOUNG, OF GENOA, NEW YORK, ASSIGNOR OF ONE-HALF TO ORLANDO M. AVERY, OF SAME PLACE.

CALENDAR-CLOCK.

SPECIFICATION forming part of Letters Patent No. 279,850, dated June 19, 1883.

' Application tiled December 2, 18852. (No model.)

To all whom t may concern:

Be it known that I, JAMEs E. YOUNG, of Genoa, in the county of Cayuga and State of New York, have invented certain new and useful Improvements in Calendar-Clocks; and I do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to 'which it pertains to make and use it, reference being had to the accompanying drawings, which `form part of this specification.

My invention relates to an improvement in calendars to be attached to watches and clocks; and it consists, iirst, in the combination of a wheel provided with projections for operating the ratchet-'wheel and the day-wheel, the daywheel provided withprojections and the pinion connected to the shaft of the day-wheel, the ratchet-wheel provided with a projection for operating the month wheel, and the monthwheel provided with projections of unequal length and carrying a February-wheel; second, in the combination of the wheel having proj ec` tions upon its face for moving both the ratchetwheel and the day-wheel, the ratchet-Wheel provided with a proj eetion for moving the monthwheel, and the month-wheel provided with projections of unequal length on its outer edge, and having a February-wheel attached to its under side, the February-wheel being operated by a projection formed on the frame, as will be more fully described hereinafter.

The object of my invention is to provide a calendar which is adapted to be applied to both watches and clocks, and in which the parts are very few and simple and not liable to get out of order.

Figure l is a plan view of a watch or clock to which my invention is applied, a portion of the dial being broken away for the purpose of showing the internal mechanism. Fig. 2 is a reversed view of the calendar mechanism. Fig. 3 is an edge view of the same. Fig. 4 is a detail view, showing the difference between the short and long projections on the monthwheel.

Y represents a suitable metallic frame upon which the mechanism of the calendar is secured. This whole mechanism is to be attached to a clock or a watch by means of the small pinion O,which is attached to the sleeve of the hour-wheel of the clock or watch. This pinion meshes with the wheel A,which makes one revolution every forty-eight hours. This wheel A has secured upon its face the two iiat projections P,which are placed just far enough from its center, so that when th'e wheel sweeps around these projections P engage with the teeth of the ratchet-wheel B and move it forward one tooth every twenty-four hours; also, projecting from the face of the wheel A, but placed farther outward from the center, are the two projections Q, which engage with the ratchet R on the shaft of the day-wheel C, and thus move the day-wheel one-seventh around every twenty-four hours. This Amovement of the day-wheel takes place at twelve oclock at night, and each time that it isf moved another day is shown through the opening in the dial. This day-wheel has the projections S formed upon its edge for the purpose of engaging with .the proj eetions T upon the month-wheel, and moving the month-wheel around when the daywheel is turned by hand, and thus have the two to always correspond.

T he ratchet-wheel B,which is operated by the projections P on the wheel A, is provided with a projection, D, which strikes against the projections Ton the month-wheel V at every revolutionthatv is@A madev by, the wheel B. f As this wheel B'has thirty ratchets, and Vis moved forward one ratchet every twenty-four hours by the projection l?, it will be seen that the projection D will only come in contact with the month-wheel V, so as to move it around once a month. ln order to regulate the time when the month-wheel V is moved by the projection D, so as to correspond to the number of days in a month, the projections T upon the edge of the month-wheel are made of different lengths. Where the months have only thirty days the projections T are made longer than the projections which are made opposite the months having thirty-one days, and thus as the wheel B sweeps around the projection D will strike against the longer projections T sooner than it will strike against the shorter ones. These turned one-twelfth around one day sooner than it would have been moved had the month had thirty-one days. As shown in Fig. 5, it will take a longer time forthe projection D to reach a short projection on the month-wheel as the wheel B sweeps around than it will to reach a long one, and this difference in time is equal to one day, andhence makes adiffcrence of one day in the movement of the month-v wheel. The projection T,which represents or is opposite the month oi" February, is made much shorter than any of the others, and hence the projection D will take a shorter time to reach this one, and so will make a difference of two or three days, according tothe position of the February-wheel E. Each time the wheel B is moved one tooth forward the pointer is made to point to another day, and each t-ime the projection D on the wheel B moves the wheel V forward one tooth a new month is shown through the opening in the calendar. As the day-wheel O revolves its teeth S come in between the projections T, formed upon the edge of the month-wheel V. Should it be desired at any time to change the day-wheel by hand, so as to adjust the calendar, the teethof the day-wheel will catch against the projections T on the montl1-wheel and move the monthwheel correspondingly around, so that if it is toward the end of the month the month will be changed at the same time as the day. ln this manner the day and month wheels are always made to correspond. f he February changes are provided for by a four toothed or pronged wheel, Fi, on the under side of the month wheel. This wheel E is held from turning by a detent, but is carried around by the month-wheel, so that when February shows through the opening in the dial the wheel E will be in the right position for the projection D on the wheel B to move the monthdisk the night ofthe 28th. The prongs or arms of the wheel E extend out just flush with the edge of themontltwheel, so that they willbe struck by the projection D on the wheel B, the same as the projections T. This wheel E is secured to the montlrwheel at such a point that the projection D will strike one of the arms ofthe wheel E sooner than it would strike the corresponding projection on the edge ofthe wheel, and the consequence is that the month-wheel is shifted sooner at the end of February than the wheel would be shifted were it not for the wheel E. In order to have twenty-nine days forleap-year, one ofthe prongs of the wheel E is cut away enough to make one days difference, so that the projection D on the wheel B is onedaylongerin reaching it. Tn ordertohave the leap-year tooth to the wheel come outside, a pi n, l, is formed upon the calendar-frame,

under the month-wheel and in such a position that when the month-wheel is moving around, the tooth of the February-wheel comes against the pin, and the month-wheel moves around causes the February-wheel to move around one tooth, thus causing the leap-year tooth to come around once in four years. The wheel A makes one revolution every two days. The wheel B has thirty-one teeth and makes one revolution each month. The wheel C makes one revolution each week, and the monthwheel makes one revolution each year. The February-wheel makes one revolution in four years. The post to which the pointer is attached represents the hour-wheel of the clock7 and should always be turned the way thehands of the clock go. The ratehets are provided with suitable detents or stops of any kind, which prevent them from moving backward. The pinion-wheel is put on the sleeve of the hour-wheel and threaded, so that it may be taken off, if necessary. The wheelB is moved by the projection l? before the day-wheel U moves.

Vhen it is desired to change by hand from the last day ofthe month to the irst of the next, the projection D on the wheel comes in contact with the projection T on the monthwheel V and moves the month-wheel around the distance of one tooth on the wheelB. This movement of the month-wheel brings the pro` jections around, so that, when the day-whee1 moves, the teeth will catch against the projections ofthe monthwheel and carry it around one-twelfth.

The projections S come into use for moving the month-wheel when the changes are made by hand, and not when the clock is in operation.

Having thus described my invention, I claim* l. The combination ofthe wheel A, having the projections I Q, pinion R, and wheel. (i, provided with the projections S, with the wheel B, provided with projection D, and wheel V, providedwith projections T, and carrying a February-wheel, substantially as shown.

2. The combination of the wheel A, having projections upon its face for moving both the day-wheel and the wheel B, the wheel l) being provided with the projection D, with the month-wheel having projections of unequal length formed upon its edge and carrying the Februarywheel, substantially as speciiied.

ln testimony whereof l.: flix my signature in presence of two witnesses.

JAMES E. YOUNG. Witnesses:

Wirtin T. Mon,

Artinian A. M As'rnv.

IOO 

